57 lines
1.6 KiB
Ruby
57 lines
1.6 KiB
Ruby
module Soml
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# collection of the simple ones, int and strings and such
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Compiler.class_eval do
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# Constant expressions can by definition be evaluated at compile time.
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# But that does not solve their storage, ie they need to be accessible at runtime from _somewhere_
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# So expressions move the data into a Register.
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# All expressions return registers
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# But in the future (in the one that holds great things) we optimize those unneccesay moves away
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def on_int expression
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int = expression.first
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reg = use_reg :Integer , int
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add_code Register::LoadConstant.new( expression, int , reg )
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return reg
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end
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def on_true expression
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reg = use_reg :Boolean
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add_code Register::LoadConstant.new( expression, true , reg )
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return reg
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end
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def on_false expression
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reg = use_reg :Boolean
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add_code Register::LoadConstant.new( expression, false , reg )
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return reg
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end
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def on_nil expression
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reg = use_reg :NilClass
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add_code Register::LoadConstant.new( expression, nil , reg )
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return reg
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end
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def on_string expression
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value = expression.first.to_sym
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reg = use_reg :Word
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Register.machine.constants << value
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add_code Register::LoadConstant.new( expression, value , reg )
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return reg
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end
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def on_class_name expression
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name = expression.first
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clazz = Parfait::Space.object_space.get_class_by_name! name
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raise "No such class #{name}" unless clazz
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reg = use_reg :Class , clazz
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add_code Register::LoadConstant.new( expression, clazz , reg )
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return reg
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end
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end
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end
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